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Project Noah Nature School
Papilio polyxenes asterius
The black swallowtail is a black butterfly with yellow markings near the margins of the forewings and hindwings and more limited blue and red markings on the hindwings. Its wing span can reach 4 ½ inches. Full grown parselyworms or caterpillars can reach 2 inches in length and are smooth and green, marked with black bands and yellow spots.
On fennel in wildlife habitat yard.
Spotted on Apr 19, 2013
Submitted on Apr 29, 2013
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